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Bulletin of the Chemical Society of Ethiopia

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31P-NMR, 77Se-NMR and mass spectral studies on some tricoordinate P(III)-N and tetracoordinate P(V)-N systems

Janarthanan Gopalakrishnan, M.N. Sudheendra Rao

Abstract


A series of aminophosphines were prepared by controlled condensation reaction between PCl3 or PhPCl2 and amines, and they were converted into the corresponding chalcogenides. 31P-NMR and mass spectral data were collected for characterization of these asymmetrically substituted phosphines, and in addition, 77Se- NMR data were collected for the phosphine selenides prepared. The spectral data revealed the importance of the dipolar structure for the heavier chalcogen atoms and the π-bond structure for the lighter ones. This study has also brought out the first examples of chiral tris(amino)phosphines and the corresponding selenides.

KEY WORDS: Aminophosphines, Dichlorophenylphosphine, Chiral tris(amino)phosphines, Aminophosphine chalcogenides, 77Se-NMR
Bull. Chem. Soc. Ethiop. 2006, 20(2), 207-218.



http://dx.doi.org/10.4314/bcse.v20i2.21163
AJOL African Journals Online